An apparatus and method for improving the safety of railroad systems of the present invention includes a system for navigating a railroad vehicle over railroad tracks. An attitude sensor is used to dynamically sense the attitude of the railroad vehicle as it travels over a set of railroad tracks. By sensing the attitude of the railroad vehicle, a determination of the condition of the railroad tracks can be made. The apparatus also sensed the position of the railroad vehicle in real time to correlate the sensed attitude with a precise position along the railroad tracks. The navigation system is capable of determining a highly accurate position of the vehicle in real time. The position of the vehicle is also used to navigate the railroad vehicle.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A method of determining the location of hazardous spots on a railroad track comprising the steps of: providing an attitude sensor attachable to a rail car for measuring the attitude of the rail car; moving the rail car over a length of railroad tracks; sensing the attitude of the rail car at a plurality of positions on the railroad tracks as the rail car moves over the length of railroad tracks; comparing the sensed attitude at the plurality of positions with reference attitudes at the plurality of positions; and determining the location of hazardous spots on the railroad track based on the comparison of the sensed attitudes with the reference attitudes.
2. A method of improving the safety of railroad systems comprising: providing a rail vehicle placed on a set of railroad tracks; determining the attitude of the rail vehicle at a plurality of positions on the railroad tracks; sensing the position of the rail vehicle at the plurality of positions; storing information based on the sensed attitude and sensed position for each of the plurality of positions; and forming a database using the stored information to indicate the current and past condition of the railroad tracks.
3. The method of claim 2 further comprising the steps of: predicting the future condition of the railroad tracks using the database.
4. The method of claim 2 further comprising the steps of: determining the rate at which the condition of the railroad tracks deteriorates using information stored in the database; and determining when the railroad tracks need to be repaired or replaced based upon the rate of deterioration.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
November 5, 1999
April 16, 2002
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